I want to try installing a parking assist module I got but am not sure what the proper method is to gain access under the dash. I see a spot in the firewall where a bunch of wires poke through and I hope to use that to run the wire from the sensor. I just don't know what the best method is to get access under the dash.
As I'll finally have my car on Monday, I should be able to answer this question soon. I have wires for radar, laser jammer, and parking sensor systems to run through the firewall into the cubby under the touch screen. When I figure it out, I'll post some photos. But I think others may already have done this and could provide answers now.
Congrats. I think you have to be the most prepared person in history for their Model S delivery with all the work you've done. Can't wait to see the results.